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Posted to issues@tez.apache.org by "Hadoop QA (Jira)" <ji...@apache.org> on 2020/09/12 15:25:00 UTC
[jira] [Commented] (TEZ-4233) Map task should be blamed earlier for
local fetch failures
[ https://issues.apache.org/jira/browse/TEZ-4233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17194750#comment-17194750 ]
Hadoop QA commented on TEZ-4233:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 10m 44s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m 0s{color} | {color:green} No case conflicting files found. {color} |
| {color:blue}0{color} | {color:blue} prototool {color} | {color:blue} 0m 1s{color} | {color:blue} prototool was not available. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color} | {color:green} The patch appears to include 2 new or modified test files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 41s{color} | {color:blue} Maven dependency ordering for branch {color} |
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| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 53s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 53s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 5s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue} 1m 10s{color} | {color:blue} Used deprecated FindBugs config; considering switching to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 37s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 9s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 4s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 2s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 1m 2s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 2s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 15s{color} | {color:orange} tez-runtime-library: The patch generated 1 new + 117 unchanged - 5 fixed = 118 total (was 122) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 16s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 46s{color} | {color:green} tez-api in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 30s{color} | {color:green} tez-runtime-internals in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 4m 55s{color} | {color:green} tez-runtime-library in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 4m 9s{color} | {color:green} tez-dag in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 33s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 46m 7s{color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.40 ServerAPI=1.40 base: https://ci-hadoop.apache.org/job/PreCommit-TEZ-Build/15/artifact/out/Dockerfile |
| JIRA Issue | TEZ-4233 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/13011448/TEZ-4233.01.patch |
| Optional Tests | dupname asflicense javac javadoc unit spotbugs findbugs checkstyle compile cc prototool |
| uname | Linux 06f804f54022 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22 16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | personality/tez.sh |
| git revision | master / 1fba8f71a |
| Default Java | Private Build-1.8.0_265-8u265-b01-0ubuntu2~18.04-b01 |
| checkstyle | https://ci-hadoop.apache.org/job/PreCommit-TEZ-Build/15/artifact/out/diff-checkstyle-tez-runtime-library.txt |
| Test Results | https://ci-hadoop.apache.org/job/PreCommit-TEZ-Build/15/testReport/ |
| Max. process+thread count | 259 (vs. ulimit of 5500) |
| modules | C: tez-api tez-runtime-internals tez-runtime-library tez-dag U: . |
| Console output | https://ci-hadoop.apache.org/job/PreCommit-TEZ-Build/15/console |
| versions | git=2.17.1 maven=3.6.0 findbugs=3.0.1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |
This message was automatically generated.
> Map task should be blamed earlier for local fetch failures
> ----------------------------------------------------------
>
> Key: TEZ-4233
> URL: https://issues.apache.org/jira/browse/TEZ-4233
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Attachments: TEZ-4233.01.patch
>
>
> Fetch failures can be a result of network issue or disk issue. Currently, AM doesn't know about whether the original input read error happened because of a local fetch failure or not. I think if a map output was reported as a subject of local fetch failure, AM should respond earlier, and blame it as soon as possible. Here is a hidden assumption that a disk read should never fail (or relatively rarely compared to network issues).
> When I detected this issue, it was a Kubernetes based LLAP environment, where a daemon completely disappeared and a new daemon - running reducer tasks - assumed that it has map outputs locally, which wasn't the case.
> This patch can help in container mode as well, as we can assume that a local read should work, and if it's not, the original map output data should be generated as soon as possible.
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